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Water-Year Summary for Site 01166500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2020
LOCATION - Lat 42°35'51", long 72°26'18" referenced to North American Datum of 1927, Franklin County, MA, Hydrologic Unit 01080202, on right bank 75 ft downstream from bridge at Farley, 0.6 mi upstream from Mormon Hollow Brook, 2.4 mi downstream from Erving, and 5.5 mi upstream from mouth.
DRAINAGE AREA - 372 mi².  
REVISIONS HISTORY - WSP 641: 1920(M). WSP 781: 1928(M), 1933(M). WSP 1301: 1915(M). WDR MA-RI-84-1: Drainage area.
PERIOD OF RECORD - Discharge: August 1914 to June 1915 (twice-daily gage heights and corresponding discharge), July 1915 to current year. Water-quality records: Water years 1953, 1965-66, 1994.
GAGE - Water-stage recorder with satellite telemeter and crest-stage gage. Elevation of gage is 388 ft above North American Vertical Datum 1988, from digital map. Prior to June 30, 1915, non-recording gage, June 30, 1915, to Sept. 20, 1938, water-stage recorder, and Sept. 21 to Dec. 31, 1938, non-recording gage, at site 2.2 mi upstream at different datum. Jan. 1 to Mar. 29, 1939, non-recording gage, and Mar. 30, 1939, to Sept. 12, 1941, water-stage recorder, at site 0.4 mi downstream at different datum.
COOPERATION - Massachusetts Department of Conservation and Recreation, Office of Water Resources.
REMARKS - Flow regulated by power plants and by Lake Monomonac and other reservoirs; high flow regulated by Birch Hill Reservoir 22 mi upstream since 1941 and Tully Lake since 1948. Greater regulation by power plants prior to 1966.
  • WY2016: Records good, except for periods of ice effect, Jan. 6-9, 13-29, Feb. 10-11, and 13-16, which are poor.
  • WY2015: Records fair due to doubtful stage-discharge relation, except for periods of ice effect, Dec. 30 to Jan. 3, Jan. 9-20, and Jan. 22 to Mar. 25, which are poor.
  • WY2014: Records fair except those for estimated daily discharge, which are poor.

  • The maximum historical peak flow of 29,000 cfs on Sept. 22, 1938 is based on a rating extended above 19,700 cfs on the basis of the mean discharge of two slope-area measurements. The maximum peak stage of 13.37 ft is from flood marks, at site and datum then in use.
    PERIOD OF RECORD - Water-quality records: Water years 1953, 1965-66, 1994.